Legend: + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Enterobacteriales => Enterobacteriaceae => Cedecea =>
Cedecea davisae – type species of the genus, Grimont et al. 1981,
Cedecea lapagei Grimont et al. 1981,
Cedecea neteri Farmer et al. 1983,
“Cedecea species 3”,
“Cedecea species 5”.
Cedecea davisae – type species of the genus, Grimont et al. 1981,
Cedecea lapagei Grimont et al. 1981,
Cedecea neteri Farmer et al. 1983,
“Cedecea species 3”,
“Cedecea species 5”.
Gram negative rods, 0.6–0.7 x 1.3–1.9 μm. Motile by 5-9 peritrichous flagella.
Colonies on nutrient agar are 1.5 mm in diameter (24 h, 37 °C), non-pigmented.
Facultatively anaerobic. Incubation temperature 25 – 37 °C.
Media: Trypticase Soy Agar with 5% sheep blood.
Nutrient Agar (Oxoid CM3) (beef extract 1 g, yeast extract 2 g, peptone 5 g, NaCl 5 g,
agar 15 g, distilled water 1l, pH 7,4).
Facultatively anaerobic. Incubation temperature 25 – 37 °C.
Media: Trypticase Soy Agar with 5% sheep blood.
Nutrient Agar (Oxoid CM3) (beef extract 1 g, yeast extract 2 g, peptone 5 g, NaCl 5 g,
agar 15 g, distilled water 1l, pH 7,4).
Isolated from human clinical specimens (blood, sputum, wounds, gallbladder, eye, abscess, throat), feces, some parasitic
arthropods & cockroaches Blatta germania and Blatta orientalis. Resistant to colistin, polymyxin, penicillin, ampicillin & cephalothin.
arthropods & cockroaches Blatta germania and Blatta orientalis. Resistant to colistin, polymyxin, penicillin, ampicillin & cephalothin.
Opportunistic pathogen. Associated with infections in humans (bacteremia), one report of C. lapagei peritonitis after surgical
intervention. Appears to be a tick pathogen: females of the tick B. microplus may be infected with Cedecea lapagei which destroys the
epithelium of the vaginal area.
intervention. Appears to be a tick pathogen: females of the tick B. microplus may be infected with Cedecea lapagei which destroys the
epithelium of the vaginal area.
- J. G.Holt et al., 1994. Begey’s manual of Determinative Bacteriology, 9th-edition, Williams & Wilkins.
- Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition,Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897. - Grimont (P.A.D.), Ggrimont (F.), Farmer III (J.J.) and Asbury (M.A.): Cedecea davisae gen. nov., sp. nov. and Cedecea lapagei
sp. nov., new Enterobacteriaceae from clinical specimens. Int. J. Syst. Bacteriol., 1981, 31, 317-326; - Farmer III (J.J.), Sheth (N.K.), Hudzinski (J.A.), Rose(H.D.) and Asburi (M.F.): Int. J. Syst. Bacteriol., 1983, 33, 438-440.
Bacteremia due to Cedecea neteri sp. nov. J. Clin. Microbiol., 1982, 16, 775-778.
Positive results for nitrate reduction, methyl red, Voges–Proskauer, citrate utilization
(Simmons),lipase (corn oil,Tween 40, Tween 60, Tween 80, and tributyrin), esculin hydrolysis (most of them), acid production from: D-
glucose, D-mannitol, salicin, maltose, trehalose, cellobiose, D-arabitol, D-mannose & D-galactose.
Negative results for gelatin hydrolysis, DN-ase, chitinase, polygalacturonase, amylase, indole production, H2S production (TSI), urea
hydrolysis, phenylalanine deaminase, lysine decarboxylase, tartrate, acid production from: dulcitol, adonitol, myo-inositol, L-arabinose,
L-rhamnose, alpha-methyl-D-glucoside, erythritol, glycerol & mucate.
(Simmons),lipase (corn oil,Tween 40, Tween 60, Tween 80, and tributyrin), esculin hydrolysis (most of them), acid production from: D-
glucose, D-mannitol, salicin, maltose, trehalose, cellobiose, D-arabitol, D-mannose & D-galactose.
Negative results for gelatin hydrolysis, DN-ase, chitinase, polygalacturonase, amylase, indole production, H2S production (TSI), urea
hydrolysis, phenylalanine deaminase, lysine decarboxylase, tartrate, acid production from: dulcitol, adonitol, myo-inositol, L-arabinose,
L-rhamnose, alpha-methyl-D-glucoside, erythritol, glycerol & mucate.
(c) Costin Stoica
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Differential characters between species:
